Sidi Wire SP cycling shoes are basically the normal Sidi Wire shoes with a Speedplay specific carbon sole that has the 4 bolt pattern integrated. Compared to the normal 3 bolt patterns of carbon soles (Look or SPD cleats) no base-plate is needed to install Speedplay (Walkable) cleats.
In this article I will share my experiences with the Sidi Wire SP shoes and zoom in on some of the unique design features.
